Kinetoscope.



VT. A. NOLAN.

' KINBTOSCOPE. ArrLioA'rIol nun mn.' 1a, 1900,

Patonted June 20, 1911.

Inventor u Hadden AHI/min.

JMS.-@vt

Jlornc-y Wilnes l 'SWIa/m.

4r.UNITED sTATEs PATENT oFFICE. mammina A. nommer cmcmnn'rr, omo.

xmaroscora,

mah-aon mam mm. yrammed June'zo, 1911.. Appuqmon meu-ine 1s, im. uml au. scam.

To 'all whom it nw'y concern: y

Be itknown'that I, THADDaUs A. Nomar,

a citizen of...the iUnited HStates, residing at f vformed with preferably four open radial Cincinnati, Ohio, have invented a new and useful Iln rovement in Kinetoscopes, of which the ollowing is a specification;

My invention relates to -kinetoscopes of the class adapted to use for moving plctures, and the objects of my improvements are to provide means for increasing the accuracy ofthe intermittent movement of the film; to' provide spring actuated mechanism for moving the film; to provide means for malntaining the film absolutely motlonless between 1ts successive intermittent 'movements and to rovide simple and durable construction an assemblage of the various co-aeting members for securing facility of operation and the required precision of action. These objects are attained Vin the following described manner as illustrated in the accompanying drawingsrin which Figure 1 is a front elevat1on with parts broken away of a kinetoscope embodying my improvements; Fig. 2, an end elevation; Fig. 3 an enlarged front elevatlon of portions of Fig. 1; Fig-4 a longitudinal vertical `section on the line a-a of Fig. 1, and Fig. 5 an enlarged end elevation of portions of Fig. 2.

` In' the` drawings,` 1 represents lparallel guide rods mounted in a stationary frame (not shown) 2 a driven shaft journaled in fixed bearings (not shown) and provided with an elongated spur gear 3. A movable y frame4 vertically adjustable on the guide rods 1 carries a vertical shaft 5 which is provided with a pinion 6A in continuous engagement with gear 3.

A transverse shaft 7 journaled in frame 4 is ldriven from shaft 5 by'means of miter gear connections 8 therewithg and a shaft 9 journaled parallel with shaft 7 is driven by. means of spur gear connections 11 therewith.` A shaft I12 provided with sprocket wheels 13 for engagement with the usual film (not shown) is journaled inthe frame 4 parallel to shaft 9. A drum 14 mounted to turn on shaft 12 and-yieldingly connected thereto by means of a" spiral spring 15 is rotated in the ratio of four to one with shaft 9 by means of spur gear connections 16 therewith. A disk 17 secured on shaft 9 is formed with a segmental guard rim 18 on one of .its faces and .ygith a stud 21 ro- I jecting .from said disk yat an int-erm iate `stop.

slots 24 adapted to movably engage with fthe stud"21 on disk 17. Said stop is also formed'with interveningV concave seats 25 in its peri hery between adjacent slots 24 for movab y engaging with the convex face of the guard rim 18'.

In operation, the multiple stop is yieldingly maintained b means of the spiral spring with one of its seats in contact with t e guard rim during a three-fourths or other predeterminedv partial rotation of the disk and until the stud enters one of the radial slots. The movable engagement of the stud in the radial slot prevents the action ofthe spiral spring from turningv the stopv too fast for the proper en agement of its succeeding seat into mova le engagement with the forward portion of the guard rim. In this manner the stop together with shaft 12 and the sprocket wheels .thereon are rotated intermittently by means of the spring in unison with the'continuous rotation of the drum. The action of the spiral spring prevents any rotative oscillation of the stop and maintains it in constant contact alternately with the stud and the guard rim regardless of any wear or imperfect adjustment of theco-acting members. The accuracy of the intermittent movement of the film by the sprocket wheels for projecting pictures on the canvas with steadiness is very materially increased by the use of the spiral spring.

Havin fully described my improvements, what I c aiml as my invention and desire Vto secure by Letters Patent lof the United States is 1r A kinetoscope comprising .a driving and a driven shaft, a multiple stop carried by they-driven shaft, means carried by the driving shaft for releasing and engaging with different portions of the stop alternately in synchronism with the driving shaft 'and yielding connections for rotating the 2. A kinetoscope comprising a continuously rotative disk provided with a stud andy with a segmental guard rim, a rotative multiple stop provided with open radial slots and intervening seats, said slots and seats being arranged to make movable engagement alternately with the, respective corresponding connections' with stop.

3. A kinetoscope comprising a stop formed with radial. slots and mtervenin seats, a continuously rotative disk forme with a stud and with a segmental ard rim for engaging alternately With t e correspending slots and seats, and connections with the disk for rotatively-m'oving and maintaining the stop in one directionunder a yielding pressure. y

4; A kinetoscope comprising a continu.-v

the disk for rotating the Stud and rim, and yielding' ousl rotative driving' shaft an intermlttent y rotative driven shait, a Geneva stop mechanism connecting with said shafts for controlling the intermittent movement of the driven shaft, and means actuated by the driving shaft for continuously exerting a Variable pressure in a rotative direction on T. A. NOLAN. I

Witnesses:

vJOHN Koen, R. S. CARR.- 

